59 lines
1.9 KiB
Python
59 lines
1.9 KiB
Python
import PySimpleGUI as sg
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import math
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# Yet another usage of Graph element.
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SIZE_X = 200
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SIZE_Y = 100
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NUMBER_MARKER_FREQUENCY = 25
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def draw_axis():
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graph.draw_line((-SIZE_X, 0), (SIZE_X, 0)) # axis lines
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graph.draw_line((0, -SIZE_Y), (0, SIZE_Y))
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for x in range(-SIZE_X, SIZE_X+1, NUMBER_MARKER_FREQUENCY):
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graph.draw_line((x, -3), (x, 3)) # tick marks
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if x != 0:
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# numeric labels
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graph.draw_text(str(x), (x, -10), color='green')
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for y in range(-SIZE_Y, SIZE_Y+1, NUMBER_MARKER_FREQUENCY):
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graph.draw_line((-3, y), (3, y))
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if y != 0:
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graph.draw_text(str(y), (-10, y), color='blue')
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sg.theme('DarkAmber')
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# Create the graph that will be put into the window
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graph = sg.Graph(canvas_size=(400, 400),
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graph_bottom_left=(-(SIZE_X+5), -(SIZE_Y+5)),
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graph_top_right=(SIZE_X+5, SIZE_Y+5),
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background_color='white',
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key='graph')
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# Window layout
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layout = [[sg.Text('Example of Using Math with a Graph', justification='center', size=(50, 1), relief=sg.RELIEF_SUNKEN)],
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[graph],
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[sg.Text('y = sin(x / x2 * x1)', font='COURIER 18')],
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[sg.Text('x1'), sg.Slider((0, 200), orientation='h',
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enable_events=True, key='-SLIDER-')],
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[sg.Text('x2'), sg.Slider((1, 200), orientation='h', enable_events=True, key='-SLIDER2-')]]
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window = sg.Window('Graph of Sine Function', layout)
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while True:
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event, values = window.read()
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if event is None:
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break
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graph.erase()
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draw_axis()
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prev_x = prev_y = None
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for x in range(-SIZE_X, SIZE_X):
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y = math.sin(x/int(values['-SLIDER2-']))*int(values['-SLIDER-'])
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if prev_x is not None:
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graph.draw_line((prev_x, prev_y), (x, y), color='red')
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prev_x, prev_y = x, y
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window.close()
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